runtime/Object.h

   1 /*
   2  * Copyright (c) 1999-2003, 2005-2007 Apple Inc.  All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24         Object.h
  25         Copyright 1988-1996 NeXT Software, Inc.
  26
  27         DEFINED AS:     A common class
  28         HEADER FILES:   <objc/Object.h>
  29
  30 */
  31
  32 #ifndef _OBJC_OBJECT_H_
  33 #define _OBJC_OBJECT_H_
  34
  35 #include <stdarg.h>
  36 #include <objc/objc-runtime.h>
  37
  38 #if __OBJC__  &&  !__OBJC2__
  39
  40 __OSX_AVAILABLE(10.0)
  41 __IOS_UNAVAILABLE __TVOS_UNAVAILABLE __WATCHOS_UNAVAILABLE
  42 OBJC_ROOT_CLASS
  43 @interface Object
  44 {
  45         Class isa;      /* A pointer to the instance's class structure */
  46 }
  47
  48 /* Initializing classes and instances */
  49
  50 + (id)initialize;
  51 - (id)init;
  52
  53 /* Creating, copying, and freeing instances */
  54
  55 + (id)new;
  56 + (id)free;
  57 - (id)free;
  58 + (id)alloc;
  59 - (id)copy;
  60 + (id)allocFromZone:(void *)zone;
  61 - (id)copyFromZone:(void *)zone;
  62 - (void *)zone;
  63
  64 /* Identifying classes */
  65
  66 + (id)class;
  67 + (id)superclass;
  68 + (const char *) name;
  69 - (id)class;
  70 - (id)superclass;
  71 - (const char *) name;
  72
  73 /* Identifying and comparing instances */
  74
  75 - (id)self;
  76 - (unsigned int) hash;
  77 - (BOOL) isEqual:anObject;
  78
  79 /* Testing inheritance relationships */
  80
  81 - (BOOL) isKindOf: aClassObject;
  82 - (BOOL) isMemberOf: aClassObject;
  83 - (BOOL) isKindOfClassNamed: (const char *)aClassName;
  84 - (BOOL) isMemberOfClassNamed: (const char *)aClassName;
  85
  86 /* Testing class functionality */
  87
  88 + (BOOL) instancesRespondTo:(SEL)aSelector;
  89 - (BOOL) respondsTo:(SEL)aSelector;
  90
  91 /* Testing protocol conformance */
  92
  93 - (BOOL) conformsTo: (Protocol *)aProtocolObject;
  94 + (BOOL) conformsTo: (Protocol *)aProtocolObject;
  95
  96 /* Obtaining method descriptors from protocols */
  97
  98 - (struct objc_method_description *) descriptionForMethod:(SEL)aSel;
  99 + (struct objc_method_description *) descriptionForInstanceMethod:(SEL)aSel;
 100
 101 /* Obtaining method handles */
 102
 103 - (IMP) methodFor:(SEL)aSelector;
 104 + (IMP) instanceMethodFor:(SEL)aSelector;
 105
 106 /* Sending messages determined at run time */
 107
 108 - (id)perform:(SEL)aSelector;
 109 - (id)perform:(SEL)aSelector with:anObject;
 110 - (id)perform:(SEL)aSelector with:object1 with:object2;
 111
 112 /* Posing */
 113
 114 + (id)poseAs: aClassObject;
 115
 116 /* Enforcing intentions */
 117
 118 - (id)subclassResponsibility:(SEL)aSelector;
 119 - (id)notImplemented:(SEL)aSelector;
 120
 121 /* Error handling */
 122
 123 - (id)doesNotRecognize:(SEL)aSelector;
 124 - (id)error:(const char *)aString, ...;
 125
 126 /* Debugging */
 127
 128 - (void) printForDebugger:(void *)stream;
 129
 130 /* Archiving */
 131
 132 - (id)awake;
 133 - (id)write:(void *)stream;
 134 - (id)read:(void *)stream;
 135 + (int) version;
 136 + (id)setVersion: (int) aVersion;
 137
 138 /* Forwarding */
 139
 140 - (id)forward: (SEL)sel : (marg_list)args;
 141 - (id)performv: (SEL)sel : (marg_list)args;
 142
 143 @end
 144
 145 /* Abstract Protocol for Archiving */
 146
 147 @interface Object (Archiving)
 148
 149 - (id)startArchiving: (void *)stream;
 150 - (id)finishUnarchiving;
 151
 152 @end
 153
 154 /* Abstract Protocol for Dynamic Loading */
 155
 156 @interface Object (DynamicLoading)
 157
 158 //+ finishLoading:(headerType *)header;
 159 struct mach_header;
 160 + (id)finishLoading:(struct mach_header *)header;
 161 + (id)startUnloading;
 162
 163 @end
 164
 165 #endif
 166
 167 #endif /* _OBJC_OBJECT_H_ */